“The departure of Andres Iniesta leaves a gaping hole in their squad and Messi is not convinced that the reported South American incomings are adequate replacements.”

And according to Don Balon, a Spanish outlet famous for its outlandish transfer claims, Messi has told club president Josep Maria Bartomeu that he will leave the club next summer if signings aren’t made.

Messi is believed to be concerned that Barcelona are falling behind their rivals after Real Madrid scooped their fourth Champions League in five seasons against Liverpool last night.

The departure of Andres Iniesta leaves a gaping hole in their squad and Messi is not convinced that the reported South American incomings are adequate replacements.

Barcelona have been linked with several high-profile signings, including Atletico Madrid star Antoine Griezmann, as well as a shock move for Neymar, who left the club to join PSG a year ago.

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Real Madrid star Cristiano Ronaldo won his fifth Champions League title last night

Don Balon also claim that Messi is worried that last night’s European triumph makes Cristiano Ronaldo the frontrunner for this year’s Ballon d’Or.

And the forward is determined to win this summer’s World Cup with Argentina in order to mount a serious challenge for the award.

It's almost certainly the 30-year-old's final opportunity to win the tournament.